Psychological Perspectives Psychology is defined as the science that studies behavior and mental processes. Although psychology is explained in one simple definition, there are six different influential perspectives which psychologists may choose to use to study behavior. Each of the six perspectives tend to concentrate on different areas of study as well as deal with each case study in different ways. The six perspectives are, biological, humanistic-existential, psychodynamic, learning, and socioculture. Psychologists that use the biological perspective as their basis for understanding how and why w